AirHint found the following cheapest return flights from New York (LGA) to Belgrade (BEG) in September 2025 (see full year).

Return flights

09 Sep - 17 Sep	Air Canada
10 Sep - 18 Sep	Air Canada
30 Sep - 15 Oct	Air Canada
03 Sep - 18 Sep	United
09 Sep - 26 Sep	United
27 Sep - 08 Oct	Air Canada
05 Sep - 16 Sep	Air Canada
06 Sep - 16 Sep	Air Canada
18 Sep - 01 Oct	Air Canada
12 Sep - 23 Sep	Air Canada
12 Sep - 19 Sep	Air Canada
25 Sep - 01 Oct	Delta
30 Sep - 12 Oct	Delta
26 Sep - 08 Oct	Delta
19 Sep - 01 Oct	Delta
29 Sep - 11 Oct	Air Canada
06 Sep - 14 Sep	Delta
26 Sep - 12 Oct	Delta
28 Sep - 05 Oct	Air Canada

Also check the deals for one-way flights from New York to Belgrade in September.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from New York to Belgrade in September from $425

Return flights